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Class ThreadLauncherDialog

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Window
                    |
                    +--java.awt.Dialog
                          |
                          +--ThreadLauncherDialog
public class ThreadLauncherDialog
extends java.awt.Dialog
implements java.awt.event.ActionListener

This class creates a Dialog containing a single Cancel button and launches a thread. This thread can be stopped by the Cancel button.
Exemple of use: while loading a big file, or while doing lots of computing.

Requirements: Java 1.1

Warning: this class calls the method Thread.stop(). One should be aware that this method is deprecated in Java 1.2. It would therefore be wise to change this call to a direct call to a specific method in the task.

Please report any bug/enhancement proposal to the author.

** See http://www.chez.com/elefevre for updates and more Java stuff to download. **

Version:
v1.0.1, 15 Nov 1998:
  • new constructor added, without the parameter that concerns the label on the button
  • cosmetic modifications in the documentation
  • the go() method is renamed show(). Therefore, it now overrides the usual show() method.
v1.0, 21 Nov 1997.
Author:
Eric Lefevre (e-mail: eric.lefevre@usa.net)
See Also:
Serialized Form

Inner classes inherited from class java.awt.Component
java.awt.Component.AWTTreeLock
 
Field Summary
private  java.awt.Button cancelButton
          The Cancel Button.
private  java.lang.Thread theThreadToRun
          The Thread containing the action to execute.
 
Fields inherited from class java.awt.Dialog
base, keepBlocking, modal, nameCounter, resizable, serialVersionUID, title
 
Fields inherited from class java.awt.Window
active, base, focusMgr, inputContext, nameCounter, OPENED, ownedWindowList, serialVersionUID, state, warningString, weakThis, windowListener, windowSerializedDataVersion
 
Fields inherited from class java.awt.Container
component, containerListener, containerSerializedDataVersion, dispatcher, layoutMgr, maxSize, ncomponents, serialVersionUID
 
Fields inherited from class java.awt.Component
actionListenerK, adjustmentListenerK, appContext, assert, background, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, changeSupport, componentListener, componentListenerK, componentOrientation, componentSerializedDataVersion, containerListenerK, cursor, dropTarget, enabled, eventMask, focusListener, focusListenerK, font, foreground, hasFocus, height, incRate, inputMethodListener, inputMethodListenerK, isInc, isPacked, itemListenerK, keyListener, keyListenerK, LEFT_ALIGNMENT, locale, LOCK, minSize, mouseListener, mouseListenerK, mouseMotionListener, mouseMotionListenerK, name, nameExplicitlySet, newEventsOnly, ownedWindowK, parent, peer, peerFont, popups, prefSize, RIGHT_ALIGNMENT, serialVersionUID, textListenerK, TOP_ALIGNMENT, valid, visible, width, windowListenerK, x, y
 
Constructor Summary
ThreadLauncherDialog(java.awt.Frame parent, java.lang.String title, java.lang.String message, java.lang.Runnable taskToLaunch)
          Constructs a dialog box containing a Cancel Button and launches a Thread.
ThreadLauncherDialog(java.awt.Frame parent, java.lang.String title, java.lang.String message, java.lang.String cancelLabel, java.lang.Runnable taskToLaunch)
          Constructs a dialog box containing a Cancel Button and launches a Thread.
 
Method Summary
 void actionPerformed(java.awt.event.ActionEvent event)
          Tests if the Cancel Button has been clicked.
 void show()
          Shows the dialog box and launches the thread.
 
Methods inherited from class java.awt.Dialog
, addNotify, conditionalShow, constructComponentName, dispose, getTitle, hide, hideAndDisposeHandler, initIDs, isModal, isResizable, paramString, setModal, setResizable, setTitle
 
Methods inherited from class java.awt.Window
addOwnedWindow, addWindowListener, applyResourceBundle, applyResourceBundle, connectOwnedWindow, dispatchEventImpl, eventEnabled, finalize, getFocusOwner, getInputContext, getLocale, getOwnedWindows, getOwner, getToolkit, getWarningString, isActive, isShowing, nextFocus, ownedInit, pack, postEvent, postProcessKeyEvent, postWindowEvent, preProcessKeyEvent, processEvent, processWindowEvent, readObject, removeOwnedWindow, removeWindowListener, setCursor, setFocusOwner, setWarningString, toBack, toFront, transferFocus, writeObject
 
Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, addImpl, applyOrientation, countComponents, deliverEvent, dispatchEventToSelf, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents_NoClientCode, getComponents, getCursorTarget, getInsets, getLayout, getMaximumSize, getMinimumSize, getMouseEventTarget, getPreferredSize, getWindow, insets, invalidate, invalidateTree, isAncestorOf, layout, lightweightPrint, list, list, locate, minimumSize, paint, paintComponents, postsOldMouseEvents, preferredSize, print, printComponents, printOneComponent, processContainerEvent, proxyEnableEvents, proxyRequestFocus, remove, remove, removeAll, removeContainerListener, removeNotify, setFont, setLayout, update, updateCursor, validate, validateTree
 
Methods inherited from class java.awt.Component
action, add, addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addPropertyChangeListener, addPropertyChangeListener, areInputMethodsEnabled, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont_NoClientCode, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getInputMethodRequests, getIntrinsicCursor, getLocation, getLocation, getLocationOnScreen, getName, getNativeContainer, getParent_NoClientCode, getParent, getPeer, getSize, getSize, getToolkitImpl, getTreeLock, getWidth, getWindowForObject, getX, getY, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isDisplayable, isDoubleBuffered, isEnabled, isEnabledImpl, isFocusTraversable, isLightweight, isOpaque, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setDropTarget, setEnabled, setForeground, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, size, toString, transferFocus
 
Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, registerNatives, wait, wait, wait
 

Field Detail

theThreadToRun

private java.lang.Thread theThreadToRun
The Thread containing the action to execute.

cancelButton

private java.awt.Button cancelButton
The Cancel Button.
Constructor Detail

ThreadLauncherDialog

public ThreadLauncherDialog(java.awt.Frame parent,
                            java.lang.String title,
                            java.lang.String message,
                            java.lang.String cancelLabel,
                            java.lang.Runnable taskToLaunch)
Constructs a dialog box containing a Cancel Button and launches a Thread.
Parameters:
title - the text in the title bar
message - the text in the dialog box
cancelLabel - the label on the Cancel Button
taskToLaunch - the task that we want to run in the background

ThreadLauncherDialog

public ThreadLauncherDialog(java.awt.Frame parent,
                            java.lang.String title,
                            java.lang.String message,
                            java.lang.Runnable taskToLaunch)
Constructs a dialog box containing a Cancel Button and launches a Thread. The label on the button is "Cancel" by default.
Parameters:
title - the text in the title bar
message - the text in the dialog box
taskToLaunch - the task that we want to run in the background
Method Detail

show

public void show()
Shows the dialog box and launches the thread.
Overrides:
show in class java.awt.Dialog

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent event)
Tests if the Cancel Button has been clicked. In that case, stops the thread and closes the dialog box.
Specified by:
actionPerformed in interface java.awt.event.ActionListener
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